the fullest possible extent the implications of the blessing they have already received. So the essence of his prayer for them is that you may know (verse 18). Although his other recorded prayers range more widely than this, they all include a similar petition either for ‘power to comprehend’ (3:18) or for ‘the knowledge of his will in all wisdom and understanding’2 or for ‘knowledge and all discernment’.3 We must not overlook this emphasis. Growth in knowledge is indispensable to growth in holiness.