5 In order to solve this point, attend. It may be solved by [quoting] a similar mode of speaking. You have it written, “God tempts not any man;” and again you have it written, “The Lord your God tempts you, to know whether you love Him.” Just the point in dispute, you see. For how does God tempt not any man, and how does the Lord your God tempt you, to know whether ye love Him? It is also written, “There is no fear in love but perfect love casts out fear;” and in another place it is written, “The fear of the Lord is clean, enduring for ever.” Here also is the point in dispute. For how does perfect love cast out fear, if the fear of the Lord, which is clean, endures for ever?
Source: Tractates on the Gospel of John (New Advent)