Psalm 84:2

“My heart and my flesh cry out for the living God!” Psalm 84:2

The desires of the heart are the best proofs of salvation; and if a man wishes to know whether he is really saved or not, he can very soon find out by putting his finger upon the pulse of his desires, for those are things that never can be counterfeit. 

You may counterfeit words; 

you may counterfeit actions; 

but you cannot counterfeit desires. 

Archibald Brown, “The Heart’s Cry after God” 1879