"...Believe in the Lord Jesus Christ, and you will be saved..." (Acts 16:31)!
"Let those who have trusted in the LORD, say so...." (Ps. 107:2)!
"... the Lord knows those who are His, so let every one that calls himself a Christian, depart from iniquity" (2 Tim. 2:19)!
BE HIS BODY!
"Now ye are the body of Christ, and each is important to the others" (1 Cor. 12:27).
"And He gave...pastors and teachers for the instruction of believers, that we might do the work of the ministry, by encouraging and enlarging of the body of Christ" (Eph. 4:11-12)!
"Therefore, do not lie, but speak the truth to others: for we are members one of another. Do not be angry, and do not sin: deal with conflict right away: do not let the devil divide you. Do not steal: but perform honest labor to earn, so that you will have enough to give to those in need. Speak only those things which encourage and build up others, that you become a blessing to all who hear you. Be pleasing to the Holy Spirit of God, who lives within you, sealing you unto God, until the day of redemption. Rid yourself of bitterness, wrath, anger, rowdiness, and negative talk about others, and be without malice: be kind to one another, tenderhearted, forgiving one another, even as God, for Christ's sake, has forgiven you" (Eph. 4:25-32).