The next verse in the link is this one.
Ephesians 1:5-6
New American Standard Bible
5 He predestined us to adoption as sons and daughters through Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, with which He favored us in the Beloved.
The link is doing the same fallacy. It’s using a term for the body of Christ as a whole and trying to make it about a individual.
But if you continue to read it from there all the way through the end of chapter two it becomes clear it’s about the body as a whole, and not the individual.
Ephesians 2:11-16
New American Standard Bible
11 Therefore remember that previously you, the Gentiles in the flesh, who are called “Uncircumcision” by the so-called “Circumcision” which is performed in the flesh by human hands— 12 remember that you were at that time separate from Christ, excluded from the people of Israel, and strangers to the covenants of the promise, having no hope and without God in the world. 13 But now in Christ Jesus you who previously were far away have been brought near by the blood of Christ. 14 For He Himself is our peace, who made both groups into one and broke down the barrier of the dividing wall, 15 by abolishing in His flesh the hostility, which is the Law composed of commandments expressed in ordinances, so that in Himself He might make the two one new person, in this way establishing peace; 16 and that He might reconcile them both in one body to God through the cross, by it having put to death the hostility.
It’s similar to this verse commonly used by universalist in a equally wrong way as OSAS.
1 John 2:2-6
New American Standard Bible
2 and He Himself is the propitiation for our sins; and not for ours only, but also for the sins of the whole world.
3 By this we know that we have come to know Him, if we keep His commandments. 4 The one who says, “I have come to know Him,” and does not keep His commandments, is a liar, and the truth is not in him; 5 but whoever follows His word, in him the love of God has truly been perfected. By this we know that we are in Him: 6 the one who says that he remains in Him ought, himself also, walk just as He walked.
It says that he does for the sins of the whole world. But then it continues on to say that those who remain in him. He says those they remain becsuse not all will remain. It also says whoever follows his word will be perfected, their love perfected. Paul makes it clear in the other verses I showed up above in the other post thst the perfection does not actually happen now but later.
Then further down in this same chapter we read.
1 John 2:24
New American Standard Bible
24 As for you, see that what you heard from the beginning remains in you. If what you heard from the beginning remains in you, you also will remain in the Son and in the Father.
It says see that what you heard remains in you. ( the gospel ) remaining in the believer. Then it says “ if” it remains in you ( indicating it can also be lost ) you will also remain in the son.
It will be several hours until I am back.