The Bible on Eternal Security

In the English language, we will often find what is called "if-then" statements. These are conditional statements which say that IF something happens THEN something else will happen. For example, IF I pour a cup of water on my head, THEN I will get wet.  We also find these "if-then" conditional statements in the Bible in regards to the issue of the eternal security of the Christian believer. Here are a few of them:

“IF you keep my commandments, you shall remain in my love” (John 15:10).

“Well, because of unbelief they were broken off, and you stand by faith. Be not highminded, but fear: For if God spared not the natural branches, take heed lest he also spare not you. Behold therefore the goodness and severity of God: on them which fell, severity; but toward you, goodness, IF you continue in his goodness: otherwise you also shall be cut off” (Romans 11:20-22).

"Moreover, brethren, I declare unto you the gospel which I preached unto you, which also you have received, and wherein you stand; By which also you are saved, IF you keep in memory what I preached unto you, unless you have believed in vain” (I Cor. 15:1-2).