When we are born again, we have spiritual senses, which grow and mature as we mature in Christ.

John 3:3  Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God. 

1 Peter 1:23 Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever.

Psalm 34:8 taste and see that the LORD is good: blessed is the man that trusteth in him.

Luke 10:23 And he turned him unto his disciples, and said privately, Blessed are the eyes which see the things that ye see:

Matthew 13:16 But blessed are your eyes, for they see: and your ears, for they hear.

Genesis 8:21 And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart is evil from his youth; neither will I again smite any more every thing living, as I have done.

2 Corinthians 2:14 Now thanks be unto God, which always causeth us to triumph in Christ, and maketh manifest the savour of his knowledge by us in every place.

Luke 14:34 Salt is good: but if the salt have lost his savour, wherewith shall it be seasoned?

Acts 17:27  That they should seek the Lord, if haply they might feel after him, and find him, though he be not far from every one of us:

1 Corinthians 2:9-14 But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him. But God hath revealed them unto us (the apostles) by his Spirit: for the Spirit searcheth all things, yea, the deep things of God. For what man knoweth the things of a man, save the spirit of man which is in him? even so the things of God knoweth no man, but the Spirit of God. Now we have received, not the spirit of the world, but the spirit which is of God; that we might know the things that are freely given to us of God. Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual. But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.

Hebrews 5:14 But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.

1 Timothy 4:2 Speaking lies in hypocrisy; having their conscience seared with a hot iron;