After the heights of Abraham’s intercessory prayer before the Lord in chapter 18, the next we read of Abraham is in Genesis 20:1-18 where he fell for the ‘same old story’ of a previous incident recorded in chapter 12. Passing Sarah off as his sister (although she was actually his half-sister) before Abimelech almost resulted in disaster for all concerned. But with this repeat offence, God intervened, and by His grace, not only rescued the situation but also used it for Abraham’s (and our) blessing.