I would say yes. I mean if you don't feel sorry then it also doesn't look like you've changed your mind, right? But when you look at this example here then it sounds like all you need to do is believe: Act 10:29 Therefore came I unto you without gainsaying, as soon as I was sent for: I ask therefore for what intent ye have sent for me? Act 10:30 And Cornelius said, Four days ago I was fasting until this hour; and at the ninth hour I prayed in my house, and, behold, a man stood before me in bright clothing, Act 10:31 And said, Cornelius, thy prayer is heard, and thine alms are had in remembrance in the sight of God. Act 10:32 Send therefore to Joppa, and call hither Simon, whose surname is Peter; he is lodged in the house of one Simon a tanner by the sea side: who, when he cometh, shall speak unto thee. Act 10:33 Immediately therefore I sent to thee; and thou hast well done that thou art come. Now therefore are we all here present before God, to hear all things that are commanded thee of God. Act 10:34 Then Peter opened his mouth, and said, Of a truth I perceive that God is no respecter of persons: Act 10:35 But in every nation he that feareth him, and worketh righteousness, is accepted with him. Act 10:36 The word which God sent unto the children of Israel, preaching peace by Jesus Christ: (he is Lord of all Act 10:37 That word, I say, ye know, which was published throughout all Judea, and began from Galilee, after the baptism which John preached; Act 10:38 How God anointed Jesus of Nazareth with the Holy Ghost and with power: who went about doing good, and healing all that were oppressed of the devil; for God was with him. Act 10:39 And we are witnesses of all things which he did both in the land of the Jews, and in Jerusalem; whom they slew and hanged on a tree: Act 10:40 Him God raised up the third day, and showed him openly; Act 10:41 Not to all the people, but unto witnesses chosen before of God, even to us, who did eat and drink with him after he rose from the dead. Act 10:42 And he commanded us to preach unto the people, and to testify that it is he which was ordained of God to be the Judge of quick and dead. Act 10:43 To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins. Act 10:44 While Peter yet spake these words, the Holy Ghost fell on all them which heard the word. There is no mentioning of these men repenting. Does this mean you don't even have to repent? And what does repent even mean? Does it mean you have to repent for all sins you've ever done or is it also enough when you repent for those sins which you have done which are on your mind?