'Development' in the Bible

So then, let us pursue [with enthusiasm] the things which make for peace and the building up of one another [things which lead to spiritual growth].

until all of us are united in the faith and in the full knowledge of God's Son, and until we attain mature adulthood and the full standard of development in the Messiah.

And this I pray, that your love may abound more and more [displaying itself in greater depth] in real knowledge and in practical insight,

And we desire for each one of you to show the same diligence [all the way through] so as to realize and enjoy the full assurance of hope until the end,