I answer Gordon Clark's question

Here is a quote from 20th century Christian philosopher Gordon Clark:

“In describing the nature of faith, fundamentalists, evangelicals, and even modernists in a certain way, stress the element of trust … A preacher may draw a parallel between trusting in Christ and trusting in a chair. Belief that the chair is solid and comfortable, mere intellectual assent to such a proposition will not rest your weary bones. You must, the preacher insists, actually sit in the chair. Or, as another minister recently said, mere belief that a bank is safe and sound will not protect your cash or give you any interest. You must actually put your money in the bank. Similarly, so goes the argument, you can believe all that the Bible says about Christ and it will do you no good. Such illustrations as these are constantly used, in spite of the fact that the Bible itself says, 'Believe on the Lord Jesus Christ and thou shalt be saved.'

There is here at least a lack of analysis, a confounding of something Scriptural and something that is not, a failure to equate two sides of an analogy. The weak point of such illustrations is that they compare faith with the physical act of sitting in a chair and distinguish it from belief. Belief in Christ does not rest your weary bones, for belief is mere assent. In addition you must actually sit down or deposit your money in the bank. But this analogy does not hold. The distinction between believing that a chair is comfortable and the act of sitting in it is perfectly obvious. But in the spiritual realm there is no physical action; there is mental action only: hence the act of sitting down, if it means anything at all, must refer to something completely internal, and yet different from belief. Belief that the chair has been made to stand for belief in Christ, and according to the illustration belief in Christ does not save. Something else is needed. But what is this something else that corresponds to the physical act of sitting down? This is the question that is seldom if ever answered. The evangelists put all their stress on sitting down, but never identify its analogue.” - Religion, Reason, and Revelation 95-96.

The question is: what is the analogue to sitting down in the chair?

The answer is: going into death with confidence that you will be with God on the other side. And believing this when you contemplate death. Not taking doubts with you. Not living in doubt about the immortality of your soul (conditioned on God's immortality of course) or the resurrection of your body, or prior to that your resurrection at death (of your soul and spiritual body) to where God is, Paradise, or Heaven. This is the real test that is the analogue of sitting on the chair.