Nicky Gumbel, the founder of Alpha and Vicar of Holy Trinity Brompton in London, writes: ‘The fact that Jesus is the only way to God does not mean that we simply write off all other religions as misguided or demonic. Jesus said, ‘I am the truth.’ In him, ultimate truth is to be found and he is the standard by which all truth claims are to be tested. But this does not mean that parts of the truth cannot be found in other religions. Indeed, we would expect to find truth in other religions for at least three reasons:
Firstly, although God’s revelation of himself in Jesus, witnessed to in Scripture, is unique and final, God has partially revealed himself in creation. ‘The heavens declare the glory of God; the skies proclaim the work of his hands’ (Psalm 19:1). The pinnacle of his creation is human life. As Sir Isaac Newton, the brilliant physicist and mathematician, said, ‘In the absence of any other proof, the thumb alone would convince me of God’s existence’. Therefore, the psalmist says, only a fool can claim ‘there is no God’ (Psalm 14:1; 53:1) ‘For since the creation of the world God’s invisible qualities – his eternal power and divine nature – have been clearly seen, being understood from what has been made, so that they are without excuse’ (Romans 1:20). From creation, it is possible for men and women to find out the truth about God’s existence and gain an insight into his character: his power and his glory. The evidence provided by creation is available to all, and could therefore be found in other religions.
Secondly, human beings are made in the image of God and God has given us a conscience with which to distinguish right and wrong. As Paul put it, ‘Indeed, when Gentiles, who do not have the law, do by nature things required by the law… they show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts now accusing, now even defending them’ (Romans 2:14-15). Thus, it is not surprising that the essence of ‘the golden rule’ (‘Do to others what you would have them do to you’ – Matthew 7:12) is contained in almost every religion from Confucius (551-479 BC) onwards.
Thirdly, in every heart there is a hunger for God. God has ‘set eternity in the human heart’ (Ecclesiastes 3:11). Deep down no one is satisfied with materialism; we know there is more to life. There is a God-shaped gap or hole in the heart of every human being. This hunger drives us to search for God. It is one of the explanations as to why there are so few atheists in the world and why so many seek earnestly after God.’
Nicky Gumbel, Searching Issues, 2004 edition, Kingsway, p.29-31