Jesus answered and said unto him, 'If a man loves me, he will keep my words and my Father will love him, and we will come unto him, and make our abode with Him.'
4 Successive stages of experience
Confrontation, personal by Christ Himself.
Revelation, personal insight granted by Christ Himself.
Acknowledgment, a personal acknowledgment of the truth revealed to a person, from Christ Himself.
Confession, an open public confession of the truth acknowledged by Christ Himself.
If you can check these 4 things off the list you know you have a foundation.