For when we were yet without strength - that is, powerless to deliver ourselves, and so ready to perish.
in due time - at the appointed season.
Christ died for the ungodly - Three signal properties of God’s love are here given: First, “Christ died for the ungodly,” whose character, so far from meriting any interposition in their behalf, was altogether repulsive to the eye of God; second, He did this “when they were without strength” - with nothing between them and perdition but that self-originating divine compassion; third, He did this “at the due time,” when it was most fitting that it should take place (compare Gal 4:4), The two former of these properties the apostle now proceeds to illustrate.