15.  Make ready then the vessel of thy soul, that thou mayest become a son of God, and an heir of God, and joint-heir with Christ Rom. viii. 17.; if, indeed, thou art preparing thyself that thou mayest receive; if thou art drawing nigh in faith that thou mayest be made faithful; if of set purpose thou art putting off the old man.  For all things whatsoever thou hast done shall be forgiven thee, whether it be fornication, or adultery, or any other such form of licentiousness.  What can be a greater sin than to crucify Christ?  Yet even of this Baptism can purify.  For so spake Peter to the three thousand who came to him, to those who had crucified the Lord, when they asked him, saying, Men and brethren, what shall we do Acts ii. 37.?  For the wound is great.  Thou hast made us think of our fall, O Peter, by saying, Ye killed the Prince of Life Ib. iii. 15..  What salve is there for so great a wound?  What cleansing for such foulness?  What is the salvation for such perdition?  Repent, saith he, and be baptized every one of you in the name of Jesus Christ our Lord, for the remission of sins, and ye shall receive the gift of the Holy Ghost Ib. ii. 58..  O unspeakable loving-kindness of God!  They have no hope of being saved, and yet they are thought worthy of the Holy Ghost.  Thou seest the power of Baptism!  If any of you has crucified the Christ by blasphemous words; if any of you in ignorance has denied Him before men; if any by wicked works has caused the doctrine to be blasphemed; let him repent and be of good hope, for the same grace is present even now.