1st John is the Family Book. It tells us how to become the family of God in Christ. Chapter 2 tells us that to know the Lord is to love the Lord and to love the Lord is to explore His Word and follow His Spirit, If you really want to know the Lord, you will come to love Him. If you love Him, you will want to explore all the Spiritual assets that you have in Him--all the blessings of the heavenlies. Yesterdays are gone and cannot be changed. Today is the first day of the remainder of our lives. In Christ, we can change our lives, our habits, our interests, and our ultimate destination. Try it! You'll like it!
Unless we have intimate personal experience with God through His great love, we can't really understand it. 1 John 3:1-3, introduces us to God's great love. Literally, it is an "other worldly love" according to the Apostle John. It is impossible to know or understand unless you have shared in it through the Spiritual Birth that accompanies our salvation. In Christ we share that love--a love that makes it possible for us to "love our enemies.... and to pray for those who abuse us." Don't knock it unless you have tried it!
This is a question that has existed since the beginning of the church. It was the religious leaders, not the down-and-outers, not the criminals, not the thieves and robbers. The religious, those who let their relationship with God degenerate into meaningless ritual. When we allow our relationship to be expressed only on Sundays, we too join them in meaningless religious exercises. Worship is how you live; your priorities and values in life; It our 24/7 example of what God is worth to us. For many, it may be the only glimpse of Jesus they will ever see.
Worship is much more than attending church, singing hymns, and listening to the preacher. That is all part of it, but worship is expressing what God is worth to us all the time. Our behavior; our attitude; the words we choose; these all tell the world just what God is worth to us. If you really know God, love God, you will want to share all that He is and all that He has with those who don't yet know Him.
Jesus assured his disciples just before his crucifixion that He would build His Church. If we let Him, Jesus will build His Church around us. By His Spirit, He will unite us, inspire us, and empower us to build His Church. His Church is much like His Blessings, we get the most out of it when we let Him do the planning and the doing. We are the tools in His hand, the sustenance of His Body.