must: Joh 4:34, Joh 5:19, Joh 5:36, Joh 10:32, Joh 10:37, Joh 17:4, Luk 13:32-34, Act 4:20 while: Joh 11:9, Joh 11:10, Joh 12:35, Ecc 9:10, Isa 38:18, Isa 38:19, Eph 5:16, Col 4:5 Reciprocal: 1Ch 22:5 - David prepared 2Ch 14:7 - while the land Neh 6:3 - I am doing Psa 6:5 - in the Psa 90:12 - So Mal 4:2 - the Sun Mat 12:15 - great Mat 20:6 - the eleventh Mat 20:7 - Go Mar 1:38 - for Mar 3:3 - he saith Luk 2:49 - my Luk 4:43 - I must Luk 6:8 - Rise Luk 12:49 - and Luk 13:33 - I must Joh 5:17 - My Joh 7:30 - but Gal 6:10 - opportunity