Firstly may I thank you for taking the time to read and make a comment on one of my postings. May I also express my inadequacy in expanding on the verses but I will try my best; these two verses I have found are very deep and have many levels to them however it is difficult for me to sum these up adequately, I hope that my reply will be adequate for you.

These two texts not only help us to understand our eternal relationship with Krishna whilst also expelling any impersonal philosophy or teachings.

Always think of Me, become My devotee, worship Me and offer your homage unto Me. Thus you will come to Me without fail. I promise you this because you are My very dear friend.
Bg 18.65

In the Purport by HH Srila Prabhupada for BG 18.65 he explains the following: One should always act in such a way that all his daily activities are in connection with Krsna. He should arrange his life in such a way that throughout the twenty-four hours he cannot but think of Krsna. And the Lord’s promise is that anyone who is in such pure Krsna consciousness will certainly return to the abode of Krsna, where he will be engaged in the association of Krsna face to face.

This would truly be impossible if as some interpret we are meant to merge with Krsna and become one; but also that our thoughts should be absorbed in thinking about Krishna no matter what our circumstances are.

HH Srila Visvanatha Cakravarti Thakura in his commentary notes: make an offering of your mind, your senses, or items of worship unto me, I will respond and give myself to you. I make this oath to you (te satyam). The word satyam implies something of which there is no doubt. In the footnotes it is noted Krsna said, “You will come to me.” Another way of saying this is “I will give myself to you”.

Again you could ask yourself how is this possible if we are meant to merge into one? It also for me enforces this deep personal relationship we can develop with Krishna simply by training our minds and focusing on the best way to serve him, putting Krsna first in all that we do.

Abandon all varieties of religion and just surrender unto Me. I shall deliver you from all sinful reactions. Do not fear.
Bg 18.66

In the Purport by HH Srila Prabhupada for BG 18.66 he explains the following: According to the devotional process, one should simply accept such religious principles that will lead ultimately to the devotional service of the Lord. One may perform a particular occupational duty according to his position in the social order, but if by executing his duty one does not come to the point of Krsna consciousness, all his activities are in vain. Anything that does not lead to the perfectional stage of Krsna consciousness should be avoided. One should be confident that in all circumstances Krsna will protect him from all difficulties.
The particular words used here, ma sucah, “Don’t fear, don’t hesitate, don’t worry,” are very significant. One may be perplexed as to how one can give up all kinds of religious forms and simply surrender unto Krsna, but such worry is useless.
HH Srila Visvanatha Cakravarti Thakura uses the word dharmas instead of religion but the overall commentary and notations comes to the same conclusion.
So how do we know what’s what?

Srila Prabhupada in Letter to Mahapurusa Says: The spiritual master are two parallel lines. The train, on two tracks, moves forward. The spiritual master and Krishna are like these two tracks, they must be served simultaneously. Krishna helps one to find bona fide spiritual master, and bona fide spiritual master helps one to understand Krishna. If one does not get bona fide spiritual master, then how he can ever understand Krishna? You cannot serve Krishna without spiritual master, or serve just spiritual master without serving Krishna. They must be served simultaneously.

By seeking a spiritual master who will help us focus and change our lives from a materialist to one were we look at not only developing our own personal relationship with Krsna, but more importantly help others. Then we can make this human form of life a success, and as promised take up our eternal position as devotees of Krsna.