No Chosen for something. This was chosen before, IN HIM ..
So we know that once IN HIM we recieve all the blessings IN CHRIST JESUS . Not " God chose us to get converted later because God saw something about us " theology.
Paul is talking to ALREADY saved saints . They are ALREADY predestined . This happened along with verse 3 . Paul is telling ALREADY saved people what happened AFTER
13¶In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
14Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.
They believed . AFTER not before.
Remember unless you became a proselyte they were strangers and without hope .
Paul is saying " 5Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
This happened at verse 3 .
3¶Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ: ( notice the two dots : )
The Spirit has been resurrected. Its seated in Heavenly places IN CHRIST JESUS . Ok from this position we are CHOSEN TO BE ..... From here we are predestined. Predestined to what ?
us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
We become a child through the new birth . As a child we still need the ADOPTION . what's that? Glad you asked . We have a verse ( notice i haven't gone outside the text into philosophy)
23And not only they, but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body.
Ok now you explain the text . I guarantee you will have to go into a philosophy about what took place ( supposedly) before the foundation of the world in God's mind. With no verse that says this .