Evidence

"We give thanks to God always for all of you, constantly mentioning you in our prayers, remembering before our God and Father your work of faith and labor of love and steadfastness of hope in our Lord Jesus Christ.  For we know, brothers loved by God that he has chosen you, because our gospel came to you not only in word but also in power and in the Holy Spirit and with full conviction." I Thess. 1:2-5a

When God has turned on the light in our souls, given us the gift of the Holy Spirit, and saved us from our sins through the blood of Jesus Christ, we belong to Him.  Jesus warned that there would be those who claim to have the rights as sons and daughters like true believers. They might try get to God some other way by climbing over the wall rather than going through the narrow gate (only through Jesus), but they are only thieves and robbers.  Jesus said some would act like Christians and grow around the true plants, the wheat, but they are weeds and in the end they will be pulled up and thrown into the fire.

But there are some who have entered through the narrow gate of Jesus Christ, people like Christian and Hopeful from John Bunyan's Pilgrim's Progress, who are fully convinced that Jesus Christ is Lord.  They receive the gospel of Jesus when they believe.  They believe that He has removed the burden of sin from their lives through the sacrifice of His life and blood shed on the Cross.  Their lives are changed when they are transferred from the Kingdom of darkness to the Kingdom of His love and God's power has forgiven their sins.  They turn from idols to the Living God. They now worship the Father in spirit and in truth (Jn. 4:23). Their faith in Jesus in evidence they are chosen by Him.  We do not have to wonder when they die that they are now with God worshipping before His throne in Heaven.  Jesus is their life.  Can I convince you to turn to Jesus, who loves you and gave His life for you, today?  You can have full assurance that your sins are forgiven and that you will spend eternity in Heaven with Him. All your shame will be removed because His blood washes away Your sins when you confess and believe in Jesus.  Nothing will be able to separate you from the love of God in Christ Jesus our Lord (Romans 8:39).