New Revised Standard Version
For if they fall, one will lift up the other; but woe to one who is alone and falls and does not have another to help.

Contemporary English Version
If you fall, your friend can help you up. But if you fall without having a friend nearby, you are really in trouble.

New American Bible
If the one falls, the other will help the fallen one. But woe to the solitary person! If that one should fall, there is no other to help.

Douay-Rheims Bible
If one fall he shall be supported by the other: woe to him that is alone, for when he falleth, he hath none to lift him up.

If one fall he shall be supported by the other: woe to him that is alone, for when he falleth, he hath none to lift him up.

if

Exodus 32:2-4,21 And Aaron said to them: Take the golden earrings from the ears of your wives, and your sons and daughters, and bring them to me. . . .

Deuteronomy 9:19,20 For I feared his indignation and anger, wherewith being moved against you, he would have destroyed you. And the Lord heard me this time also. . . .

1 Samuel 23:16 And Jonathan, the son of Saul, arose, and went to David, into the wood, and strengthened his hands in God: and he said to him:

2 Samuel 11:27 And the mourning being over, David sent and brought her into his house, and she became his wife, and she bore him a son: and this thing which David had done, was displeasing to the Lord.

2 Samuel 12:7 And Nathan said to David: Thou art the man. Thus saith the Lord the God of Israel: I anointed thee king over Israel, and I delivered thee from the hand of Saul,

Job 4:3,4 Behold thou hast taught many, and thou hast strengthened the weary hands: . . .

Isaiah 35:3,4 Strengthen ye the feeble hands, and confirm the weak knees. . . .

Luke 22:31,32 And the Lord said: Simon, Simon, behold Satan hath desired to have you, that he may sift you as wheat. . . .

Galatians 2:11-14 But when Cephas was come to Antioch, I withstood him to the face, because he was to be blamed. . . .

Galatians 6:1 Brethren, and if a man be overtaken in any fault, you, who are spiritual, instruct such a one in the spirit of meekness, considering thyself, lest thou also be tempted.

1 Thessalonians 4:18 Wherefore, comfort ye one another with these words.

1 Thessalonians 5:11 For which cause comfort one another and edify one another, as you also do.

but

Genesis 4:8 And Cain said to Abel his brother: Let us go forth abroad. And when they were in the field, Cain rose up against his brother Abel, and slew him.

2 Samuel 14:6 And thy handmaid had two sons: and they quarrelled with each other in the field, and there was none to part them: and the one struck the other, and slew him.