31 “Simon, Simon, look out! Satan has asked to sift you like wheat.32But I have prayed for you that your faith may not fail. And you, when you have turned back, strengthen your brothers.”
I love Jesus’ Words, “And you, when you have turned back, strengthen your brothers.”
Here is Matthew Henry’s take on it.
The charge he gives to Peter is to help others as he should himself be helped of God: “When thou art converted, strengthen thy brethren; when thou art recovered by the grace of God, and brought to repentance, do what thou canst to recover others; when thou hast found thy faith kept from failing, labour to confirm the faith of others, and to establish them; when thou hast found mercy with God thyself, encourage others to hope that they also shall find mercy.” Note, (1.) Those that have fallen into sin must be converted from it; those that have turned aside must return; those that have left their first love must do their first works. (2.) Those that through grace are converted from sin must do what they can to strengthen their brethren that stand, and to prevent their falling; see Ps. 51:11-13; 1 Tim. 1:13.
Those who have been brought back from sin to reconciliation should make it their business to seek sinners so that they might receive and embrace that same reconciliation.
You who have failed, be restored by the grace of God in Christ and then make it your business to speak boldly about your failure and His favor found in Christ alone.