Ephesians 3:17-19

...so that Christ may dwell in your hearts through faith. And I pray that you, being rooted and established in love, may have power, together with all the saints, to grasp how wide and long and high and deep is the love of Christ, and to know this love that surpasses knowledge--that you may be filled to the measure of all the fullness of God.

so that Christ may dwell in your hearts
Romans 8:9-10 You, however, are controlled not by the sinful nature but by the Spirit, if the Spirit of God lives in you. And if anyone does not have the Spirit of Christ, he does not belong to Christ. But if Christ is in you, your body is dead because of sin, yet your spirit is alive because of righteousness.

And I pray that you, being rooted
Colossians 2:7 ...rooted and built up in him, strengthened in the faith as you were taught, and overflowing with thankfulness.

together with all the saints
Ephesians 1:15 For this reason, ever since I heard about your faith in the Lord Jesus and your love for all the saints, ...

to grasp how wide and long and high and deep
Job 11:8-9 They (the mysteries of God, the limits of the Almighty) are higher than the heavens--what can you do? They are deeper than the depths of the grave--what can you know? Their measure is longer than the earth and wider than the sea.
Psalm 103:11 For as high as the heavens are above the earth, so great is his love for those who fear him;

and to know this love that surpasses knowledge
Philippians 4:7 And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.

that you may be filled
Colossians 2:10 ...and you have been given fullness in Christ, who is head over every power and authority.

to the measure of all the fullness of God
Ephesians 1:23 ...which is his body (the church), the fullness of him who fills everything in every way.

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.