Faith an effect of New Birth
New Birth or Regeneration is inseparable from it's effect, one of which is Faith [For Faith is a fruit of the Spirit Gal 5:22], now without New Birth, a Spiritual Renewal Titus 3:5, we cannot savingly believe in the Lord Jesus Christ. This is so because the message of the cross, the gospel of His accomplishments, must be apprehended by a spiritual faith in order to be converted.
New Birth is God's act, particularly the Holy Spirit, but Faith or believing is the act of the regenerated person by the enablement of the Spirit of God Heb 13:21
21Make you perfect in every good work to do his will, working in you that which is wellpleasing in his sight, through Jesus Christ; to whom be glory for ever and ever. Amen.
The parable of the sower and the different soils illustrate a good point about subjective Faith, believing to the saving of the soul Heb 10:39.
Now Matt 13:23; Mk 4:20; Lk 8:15, The good ground is a New Heart or a Regenerated Heart given as a Covenant Blessing Ezk 36:26. Now the message of the Gospel, the seed, sowed on such a Heart or Ground Understands, keeps it, and bears fruit [ Gal 5:22]. Now one cannot believe they are Justified, unless they are Justified. The regenerated heart heart cannot but believe the message of the gospel, for thats the end for which the New Heart was given, to receive the good news of salvation Eph 1:13
Back up in Heb 13:21. It states that God works in us that which is wellpleasing in His sight.
Now what is it that is wellpleasing in God's sight ? The word well pleasing is the greek word euarestos:
well pleasing, acceptable
Now the word please as in Heb 11:6
6But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.
The word please here is out of the root word for well pleasing.
Its the word euaresteō:
to be well pleasing
2) to be well pleased with a thing
So, Faith that which is well pleasing in God's sight is worked in us by the blessings of the blood of the everlasting Covenant by being given a New Heart.
I don't believe it can be made more plainer that Faith that pleases God has to be worked in us or given by His Spirit !