"Witness before"

1. Mosiah 18: 10
     10 Now I say unto you, if this be the desire of your hearts, what have you against being ^abaptized in the ^bname of the Lord, as a witness before him that ye have entered into a ^ccovenant with him, that ye will serve him and keep his commandments, that he may pour out his Spirit more abundantly upon you?
2. D&C 20: 37
     37 And again, by way of commandment to the church concerning the manner of baptism—All those who ^ahumble themselves before God, and desire to be baptized, and come forth with broken hearts and ^bcontrite spirits, and witness before the church that they have truly repented of all their sins, and are willing to take upon them the ^cname of Jesus Christ, having a ^ddetermination to serve him to the end, and truly manifest by their ^eworks that they have received of the ^fSpirit of Christ unto the ^gremission of their sins, shall be received by baptism into his church.