Alma 24:10; “And I also thank my God, yea, my great God, that he hath granted unto us that we might repent of these things, and also that he hath forgiven us of those our many sins and murders which we have committed, and taken away the guilt from our hearts, through the merits of his Son.”
Acts 9:10-16; “And there was a certain disciple at Damascus, named Ananias; and to him said the Lord in a vision, Ananias. And he said, Behold, I am here, Lord. 11 And the Lord said unto him, Arise, and go into the street which is called Straight, and enquire in the house of Judas for one called Saul, of Tarsus: for, behold, he prayeth, 12 And hath seen in a vision a man named Ananias coming in, and putting his hand on him, that he might receive his sight. 13 Then Ananias answered, Lord, I have heard by many of this man, how much evil he hath done to thy saints at Jerusalem: 14 And here he hath authority from the chief priests to bind all that call on thy name. 15 But the Lord said unto him, Go thy way: for he is a chosen vessel unto me, to bear my name before the Gentiles, and kings, and the children of Israel: 16 For I will shew him how great things he must suffer for my name’s sake.”
Mormons do not believe God will forgive you for murder.