Ephesians 5:1

I was just looking up something in my James Boice commentary on Ephesians, and I came across this part on Ephesians 5:1. Here is Ephesians 5:1-"Be imitators of God, therefore, as dearly loved children.." Here is what Boice says-"Be imitators of God.' It is the only place in the Bible where these words occur, and what makes them so startling is that they point to a standard beyond which there is no other. William Barclay calls this 'the highest standard in the world.' Alexander Maclaren calls it 'the sum of all duty.' To Martyn Lloyd-Jones it was 'Paul's supreme agrument...the highest level of all doctrine and in practice...the ultimate ideal." What a high calling we have as Christians!