"there’s nothing more difficult for us to get our minds around than the unconditional grace of God; it offends our deepest sensibilities. A conditional world is much safer than an unconditional world because a conditional world keeps us in control, it’s formulaic–do certain things and certain things are guaranteed to happen. We understand conditions. Conditionality makes sense. Unconditionality on the other hand is incomprehensible to us. We are so conditioned against unconditionality–we are told in a thousand different ways that accomplishment precedes acceptance; that achievement precedes approval.
Society demands two way love. Everything’s conditional: if you achieve only then will you receive meaning, security, respect, love and so on. But grace, as Paul Zahl points out, is one way love: “Grace is love that seeks you out when you have nothing to give in return. Grace is love coming at you that has nothing to do with you. Grace is being loved when you are unlovable.”"
Tullian Tchividjian, Too good to be true (read the full thing here)