Hold fast that which is good — 1 Thess 5:21
It is a great thing to be able to receive new truth and blessing without sacrificing the truths already proved, and abandoning foundations already laid.
Some persons are always laying the foundations, and they present at last, the appearance of a lot of abandoned sites and half constructed buildings, and nothing is ever brought to completion.
The fact that you are abandoning today for some new truth the things that a year ago you counted most precious and believed to be divinely true, should be sufficient evidence that you will probably a year from today abandon your present convictions for the next new light that comes to you.
God is ever wanting to add to us, to develop us, to enlarge us, to teach us more and more, but it is ever in the line of things which He has already taught us, and in which we have been established.
While we are to prove all things, let us hold fast that which is good, and whereto we have already attained, let us walk by the same rule, let us mind the same thing.