The Gift and the One who gave the Gift are the same. You cannot have one without the other. The Gift and the Gift-giver are a package deal.
Limitless Life, Derwin Gray
You can't expect to receive all that God has to offer without accepting Him as well. We might see portions of forgiveness, grace, mercy, and purpose without having a relationship with Him. We won't ever fully experience the beauty and power of what God offers if we won't commit to following Him though. It won't be a personal journey then, but merely a secondary spirituality that only comes into contact with the purity of God through other people. That's not the depth of commitment that interests God and it's less than appealing to us. All of God's gifts are illusions without Him at the center of them.
Fulfillment and contentment are found in all of who God is.