God so impressed Romans 12:1 on me when I was a teenager: 'I beseech you to present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.' God is talking about reasonable service, nothing exceptional - for every believer - the norm. Today the churches are talking about being normal, taking care of yourself, not working too hard... But the challenge is 'reasonable service' - giving your whole life as a 'living sacrifice'! Everything! God didn't call me to be an evangelist or a preacher - He said He wanted all of me!
A few years ago to celebrate my 60th anniversary in ministry, I revisited the place in Brighton where God first spoke to me when I was 15 years old. I was with a group of young Christians walking along the beach, but God was speaking to me, challenging me. God was saying, "I want you David!" And the devil was saying, "Don't you realise you're saved, you got baptised in water, filled with the Holy Spirit - that's enough!" But God was saying, "I want you!" He didn't say, "I want you to be a preacher, I want you to be an evangelist, a missionary..." God said, "David, I want ALL of you, EVERYTHING! - Your life, your family, your time, your house, every single thing - I want the lot!" People talk about tithing, the Biblical pattern of giving a tenth of your income to God, but a long time ago I tried the opposite, keep a tenth and give God 90%! You cannot out-give God! Give everything! The more I give Him, the more I receive in return! - Give and you will receive 'pressed down and running over!' - This is why God says, the only 'reasonable' thing is to present your body as a living sacrifice, wholly acceptable to God! - And this is only the beginning, the norm, the 'reasonable' bit! I want the un-reasonable, the extra-normal! I don't just want to receive the Holy Spirit like everybody else, I want a double portion, a treble portion, ten times, a hundred times more! I'm hungry for God! I need that anointing, that power! Jesus told the servant who did everything that was expected of him, what was reasonable - but the master did not thank him - he only did what he was employed to do (Luke 17:7-10). But I want to receive! The more you give, the more God gives back! I remember that tremendous challenge when God said to me, "David, I want YOU!" That night I had to say, "Lord, I'll give you everything!"