The question of the ages: “What must I do to be saved?” (Ac 16:30) has a straightforward answer: “Believe on the Lord Jesus Christ.” (31) Salvation isn’t complicated; little children can get this.
Yet, as simple as this is, we may miss it by changing believe on Jesus for something else. For example, we could say as Billy Graham did, believing on Jesus means repenting of our sins, asking Christ to come into our hearts and save us, and committing our lives to serve Him.
Just one little problem: no one in the Bible was saved like this, and in the end it didn’t even work for Dr. Graham himself (he had no assurance of Heaven). With the world ablaze in the wrath of God (Ro 1:18) and nowhere to hide (Re 20:11), we can’t afford to get this wrong.
To help us understand, God describes believing on Christ from multiple angles. It’s receiving Christ as He claimed to be (Jn 1:12a), believing on His name (b) … totally convinced He will do as He says He will do (Ro 4:21), that He’s trustworthy and perfectly good. (Ep 1:13) It means entering into His rest (He 4:3), ceasing from dependence upon our own works to gain acceptance with God (10), trusting implicitly in the finished work of Christ for our redemption (1Th 1:4-5a), the total payment of our sin debt to God. (Is 53:11)
God says we must be born again (Jn 3:7), conceived by God (Ja 1:18), quickened by the Holy Spirit (Ep 2:5), made a new creation. (Ga 6:15) We’re saved by grace through faith (Ep 2:8), supernatural confidence that only comes from the enabling power of God. This is a miracle, not a human work (Jn 1:13); only God can do this, with Man it’s impossible. (Mk 10:27)
So, if we don’t have supernatural assurance in the finished work of Christ, resting confidently in Him as our only hope of eternal salvation, trusting Him and believing in Him as He has called us to, knowing we are as safe from the wrath of God as Jesus Christ Himself, this then is our greatest need. Let us not go back to a memory of praying to receive Christ, or pray again to receive Him now, but let us look to the cross itself, asking God to reveal the Lamb of God to us, to give us faith in His blood. (Ro 3:25) Let us seek the Lord until we find Him (He 11:6), striving to enter the narrow gate, until we know He has borne ours sins in His own body on the tree, and has set us eternally right with God. (1Pe 2:24)