Paul prayed that the Ephesians would know the love of God and be filled up with His fullness. Love is a fruit of our new creation in Christ - not that it establishes our salvation. We have "love" because we are saved but we need to grow in it and thus it establishes our hearts.
Ephesians 3:16-19 (NASB)
[SUP]16 [/SUP] that He would grant you, according to the riches of His glory, to be strengthened with power through His Spirit in the inner man,
[SUP]17 [/SUP] so that Christ may dwell in your hearts through faith; and that you, being rooted and grounded in love,
[SUP]18 [/SUP] may be able to comprehend with all the saints what is the breadth and length and height and depth,
[SUP]19 [/SUP] and to know the love of Christ which surpasses knowledge, that you may be filled up to all the fullness of God.
We have the love of God in us but as a fruit it needs to grow.
Romans 5:5 (NASB)
[SUP]5 [/SUP] and hope does not disappoint, because the love of God has been poured out within our hearts through the Holy Spirit who was given to us.
Doing works does not "make" us saved from hell. Jesus' blood saved us - not our selves and what we have done or will do. Now we are to grow in the grace and knowledge of Him.
2 Peter 3:18 (NASB)
[SUP]18 [/SUP] but grow in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be the glory, both now and to the day of eternity. Amen.