John 10: 27-29
"My sheep hear my voice, and I know them, and they follow me. I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father's hand."
There is comfort in this statement by Jesus. Because it is God himself that saved you, it is impossible to be unsaved; no one can snatch your salvation from you. While the thief comes to "steal, kill, and destroy," those who belong to Jesus are safe. Our salvation comes from the life, death and resurrection of Christ, who is the "I AM," meaning God. The reason why this statement provides comfort is that our salvation isn't based on anything that we do or don't do, our wealth, our class, how smart we are, what country we were born in, or whatever label we take on in life, if God saves you and claims you as His own, there is no one, including yourself, that could do away with what God has done. Paul declares that we are his "workmanship," and that it is "not your own doing; it is the gift of God," (Ephesians 2:8-10). Your salvation is a secure salvation in Christ. Those who are saved through Christ are bestowed with the Holy Spirit, acting as a seal, the guarantee of your salvation (Ephesians 1:13-14). Take comfort that God is the one who saved you because of his love for you.
This should serve as a reminder that your salvation is secure in Christ, having the Holy Spirit as an assurance of your faith. Through this reminder, the author of Hebrews wrote in Hebrews 10:19-25;
"Therefore, brothers, since we have confidence to enter the holy places by the blood of Jesus, by the new and living way that he opened for us through the curtain, that is, through his flesh, and since we have a great priest over the house of God, let us draw near with a true heart in full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water. Let us hold fast the confession of our hope without wavering, for he who promised is faithful. And let us consider how to stir up one another to love and good works, not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near."