Christian faith from its very beginnings has declared that God is able (Jude 24). Early Christian witness was to a God who, not only was able but who was wholly other and supreme to all things. Irenaeus declared that God 'is not as men are...the Father of all is...a simple, uncompounded Being, without diverse members, and altogether like, and equal to himself, since he is wholly understanding, and wholly spirit, and wholly thought, and wholly intelligence, and wholly reason, and wholly hearing, and wholly seeing, and wholly light, and the whole source of all that is good.' (Against Heresies, II.XIII.III) God's supremacy over all things and his Lordship over the whole cosmos (Colossians 1:15-18) was powerfully witnessed to and affirmed by the early church in face of fierce persecution and demands upon them to swear their allegiance to Caesar, something that they refused to do; God is able was their ringing testimony.
However we live in a time when many would seek to convince us that humanity is able on its own without any need for God. Certainly this is not a new concept with history littered with human desire to 'go it alone', be masters of their own lives and discover a perceived freedom from religious conviction and faith in God. Many have come to believe that God is an unnecessary part of human life, that our own advancement's and achievements have made God an irrelevance and that there is no need for God.
Without doubt our continued discoveries in the sciences, anthropology and cultural hermeneutics, amongst other things, has enabled many exciting and revolutionary changes to take place within our societies. Yet as advanced as we appear to be, as able as we think we are, we are left with the reality that, compared to God, we simply are not able;