“In order to unite with one another, we must love one another; in order to love one another, we must know one another; in order to know one another, we must go and meet one another . . . .” These words, known as the “Testament of Cardinal Mercier,” are the impetus for the annual Week of Prayer for Christian Unity. The week (actually an octave, eight days) has been celebrated continuously since 1894, though not always in January. In 1894 and 1895, an octave for unity, beginning on Ascension Day and concluding on Pentecost, was observed by the Church of England. In 1895, the Roman Catholic Church joined their Anglican neighbors in this observance in obedience to a worldwide request of Pope Leo XIII. In 1897, in the encyclical “Divinum illud munus,” Leo XIII established this novena “in perpetuity,” but it was not until 1908 that the octave was observed on the January dates with which it is commonly associated, beginning on the former date for the feast of the Confession (or Chair) of St. Peter and ending on the Feast of the Conversion St. Paul.


Because January 18 is a weekday in Ordinary Time, readings other than those assigned to the weekday might appropriately be chosen from the readings for the Unity of Christians (Lectionary #867-871) to begin the week of prayer for Christian unity.


Suggested Psalm for Christian Unity Ps (121) 122 (869-5)

One of the “songs of ascent,” this psalm was prayed by pilgrims as they approach Jerusalem, going up the hill of the Temple Mount. Their prayer was for peace in this city that had known such division (and still does).


Con Qué Alegría/Let Us Go Rejoicing (Cortés) FYC 263/FYC2 227
I Rejoiced (Dean) GP 268
I Rejoiced (Walker) GP 269
I Rejoiced When I Heard (Batastini/Gelineau) RS 165
I Rejoiced When I Heard Them Say (O’Carroll) CH 159
I Rejoiced When I Heard Them Say (Warner) PMB 170/WC 470

I rejoiced When I Heard Them Say   OIF 288
I Was Glad (Haas) GC 121/RS 166
I Was Glad When They Said to Me (chant) BFW 12, 270, 406
Let Us Go Rejoicing (Englert) PMB 743, 785
Let Us Go Rejoicing (Guimont) GC2 993
Let Us Go Rejoicing (Harbor) LMGM 542
Let Us Go Rejoicing (Hurd) JS 101/OFUV 243
Let Us Go Rejoicing (Joncas) GC 120/GC2 68/G3 84/RS 167

Let Us Go Rejoicing (Roberts) G3 85
Let Us Go Rejoicing (Schaefer) PMB 554
Qué Alegría Cuando Me Dijeron (Grajeda) FYC 262/FYC3 229
Qué Alegría Cuando Me Dijeron (Manzano) FYC3 539/GP 270
Qué Alegría/I Rejoiced (Cortez) FYC 261/FYC3 228
We Shall Go Up with Joy (Murray/Gelineau) CBW III 588/WOR 67


or Ps (99) 100 (Lect. #869-3)
Another “song of ascent,” this pilgrimage hymn invites all creation to join in the praise of God.


Aclamamos al Señor (Reza) GP 247
Arise, Come to Your God (Gelineau) GC 96/RS 139/WOR 53
Let All the Earth Cry Out (Sommerville) PMB 162/WC 432
Nosotros Somos Su Pueblo/We Are God’s People (Cortez) FYC 243/FYC3 209
Somos Su Pueblo y Ovejas (Montgomery) FYC 244/FYC3 211
Somos Su Pueblo y Ovejas (Sosa) FYC 245/FYC3 210
We Are God’s People G3 71

We Are God’s People (Haas) GC 97/GC2 56/G3 71/RS 138
We Are God’s People (Harbor) LMGM 536
We Are God’s People (Smith) GP 246/JS3 84

We Are His People (Friedman)  JS3 83
We Are His People (Guimont) GC2 970
We Are His People (Jordan) LMGM 537
We Are His People (LeBlanc) CH 151
We Are His People (O’Carroll) CH 150

Songs for Unity

All Are Welcome (Haugen) BB-MI 413/GC 753/GC2 741/G3 850/GP3 570/LMGM2 683/SS 920/WC 911/WOR4 833/WS 735
Anthem (Conry) BB-MI 501/GC 690/GC2 681/G3 778/GP 578/GP3 556/JS 761/JS3 727/OFUV 705
As a Fire Is Meant for Burning (Duck) GC 663/GC2 643/G3 744/RS 779
As Grains of Wheat  BB-MI 331/GP3 509

As the Grains of Wheat (Haugen) GC 825
At That First Eucharist BB-MI 366/CH 366/GC 852/GC2 840/G3 914/GP 511/GP3 476/JS 826/JS3 804/LMGM 134/LMGM2 756/OIF 530/OFUV 828/PMB 292/SS 1002/WC 654/WOR 733/WOR4 954/WS 568
Beloved, Let Us Love (Bonar) WOR 601
Bread for the World (Farrell) BB- MI 349/GC 827/GP3 483/JS 810/JS3 780
Bread of Life, Hope of the World (Farrell) BB-MI 319/GC 821/GP3 482//JS 819/JS3 788/OFUV 814
Christ Is Made the Sure Foundation CH 540/GC 662/GC2 642/G3 745/JS 780/JS3 /PMB 384/RS 778/SS 844/WC 783/WOR 617/WOR4 732
Christ’s Church Shall Glory (Idle/Luther) CH 487/WOR 616
Companions on the Journey (Landry) BB-MI 578/GP 566/GP3 545/JS 851/JS3 835/OFUV 762
Diverse in Culture, Nation, Race (Duck) GC 739/GC2 729/G3 833/RS 837
Father, We Thank Thee Who Has Planted CH 374/GC 568/GC2 547/G3 632/OIF 539/PMB 316/RS 705/SS 835/WC 656/WOR 558/WOR4 631/WS 539
For the Healing of the Nations (Kaan) BB-MI 426/GC 719/GC2 712/G3 803/GP3 517/JS 866/JS3 844/OIF 877/PMB 505/SS 910/WC 960/WOR 643/WOR4 798/WS 777
From East and West (Dufford) GP 567
Gather Us In (Haugen) BB-MI 302/GC 744/GC2 743/G3 848/GP3 471/LMGM2 676/RS 850/SS 922/WC 909/WOR 665/WOR4 836/WS 733
Gather Us Together (Alstott) BB-MI 317/GP 534/GP3 455/JS 801/JS3 765/OFUV 783
Gather Your People (Hurd) BB-MI 313/GC2 742/G3 837/GP3 465/JS 798/JS3 768/OFUV 782/WOR4 478
I Am the Vine (Hurd) GC 672
I Am the Vine (Miffleton) OIF 762/PMB 436/WC 868/WS 699
I Rejoice (Hart/Hipp)  SPS 312

I Rejoiced (Thomson) SPS 218

In Christ There Is a Table Set for All (Stamps) GC 749
In Christ There Is No East or West  BB-MI 576/ CH 650/GC 738/GC2 726/G3 832/GP 565/GP3 548/JS 850/JS3 831/LMGM 301/LMGM2 664/OIF 683/OFUV 761/PMB 391/RS 836/SS 918/WC 807/WOR 659/WOR 4 824/WS 647
In My Name CH 477
Let Us Break Bread Together BB-MI 320/GC 832/GC2 832/GP3 488/JS 806/JS3 800/LMGM 135/OIF 572/OFUV 801/PMB 313/RS 911/WC 653/WOR 727/WS 544
Let Us Praise God Together CH 569
Lord of All Nations, Grant Me Grace CH 612/GC2 602/G3 703/OIF 687/WC 805/WOR 602/WOR4 697
Lord, You Give the Great Commission BB-MI 380/CH 639/GC 456/GC2 466/G3 544/GP3 339/498/JS 452/JS3 431/OIF 668/OFUV 738/PMB 382/RS 607/SS 772/WC 788/WOR 470/WOR4 790/WS 641
Make Us One (Marchionda)  OIF 686/PMB 392/WC 806/WS 646
O Christ the Great Foundation (Lew/Aurelia) GC2 646/RS 782/SS 878/WOR 618
O Christ the Great Foundation (Lew/Abreu) RS 781
One Bread, One Body (Foley) BB-MI 339/GC 830/GC2 813/G3 932/GP 499/GP3 498/JS 820/JS3 793/LMGM 139/LMGM2 760/OIF 562/OFUV 824/RS 915/SPS 249/WC 687/WOR4 931/WS 535
One Is the Body (Cooney) GC 846
One Spirit, One Church (Quinlivan/Keil) BB-MI 417/GP 570/GP3 568/JS 778/JS3 745/OFUV 769
The Church’s One Foundation BB-MI 418/CH 489/GC 661/G3 742/GP3 571/JS 779/JS3 746/OIF 671/OFUV 770/PMB 385/WC 789/WOR4 736/WS 638
There Comes a Time (Jabusch/Kreutz) CH 491
There Is a Prayer (Wright/Kreutz) CH 494
There Is One Lord (Alstott) JS 699
There Is One Lord (Deiss) OIF 306,512/LMGM2 745/PMB 287/WC 638/WOR4 921/WS 533
There Is One Lord (Taizé) GC 809/GC2 796/G3 905/RS 835/WOR 657
They’ll Know We Are Christians (Scholtes) BB-MI 581/GC 735/GC2 728/G3 835/GP 568/GP3 544/JS 849/JS3 832/OIF 688/OFUV 759/PMB 390/WC 804/WS 645
Trilingual Ubi Caritas PMB 428
Ubi Caritas (Browning) GC2 568
Ubi Caritas (Rosania) BB-MI 478/GP 364/GP3 664/JS 754/JS3 710/OFUV 687

Ubi Caritas (Hurd) BB-MI 327/G3 696/GP3 510/JS 805/JS3 776/OFUV 804/SPS 259

Ubi Caritas (Thomson)  SPS 362
Ubi Caritas et Amor (Chant) BB-MI 477/CH 386/GC 631/GC2 601/G3 705/JS 753/JS3 734/PMB 430/RS 752/SS 733/WC 849,852/WOR 598/WS 686,687
Ubi Caritas et Amor (Taizé) GC 408/GC2 430/G3 500/SS 858/WC 824/WOR 604/WOR4 702
We Are Many Parts (Haugen) BB-MI 580/GC 733/GC2 727/G3 834/GP3 550/RS 840/SS 919/WC 803/WOR4 822/WS 644
Where Charity and Love Prevail BB-MI 482/ CH 387/GC 625/GC2 610/G3 706/GP 644GP3 288/JS 756/JS3 374/OIF 747/OFUV 694/PMB 424, 429/RS 747/SS 857/WC 850,858, 833/WS 685,688
Where Two or Three Have Gathered (Ridge) GP 587GP3 585//JS 771/JS3 738