having proper English grammar IS important when you preach.

Those who knew me in high school affirm that I should not be the guy to give English grammar advice, but here it goes. I often hear preachers use grammar incorrectly when they speak of applying texts to you and I (it should be "you and me").

Consider some of the following phrases. Should it be...
1. Pastor Bob and me decided to start a new series... or Pastor Bob and I decide to start a new series...
2. Jerry applied the text to my wife and I or Jerry applied the text to my wife and me.

Here is a very good and clear description of when to use me and when to use I in your preaching.

Just between you and me, today I'm going to talk about the pronouns I and me. I've been meaning to talk about the phrase between you and I for a while, but when I heard that Hillary Clinton had chosen the song “You and I” by Celine Dion for her campaign theme song, I knew it was finally the right time to tackle this topic!

That's because Celine Dion's song “You and I” is grammatically correct, whereas the Jessica Simpson song “Between You and I” is incorrect.

First the basics: the words you, I, and me are all pronouns. They stand in for nouns like Hillary, Jessica, and Grammar Girl.

Pronouns can be subjects, objects, or possessive. I've talked about this before—the subject of a sentence is the agent taking action, and the object is the thing or person being acted upon. If I say, “I love you,” I am the subject (the one doing the loving), and you are the object (the target of my love and the object of my affection).

A possessive pronoun shows that the thing or person possesses something. I won't talk about possessive pronouns anymore today, because they aren't relevant to the topic.

This next part you just kind of have to know. If you've been speaking English for a long time, you probably know it whether you think you do or not, and if you are learning English you just have to memorize it.

I is a subject pronoun, and me is an object pronoun.

The proper sentence is I love you, not Me love you. You use I because the pronoun is the subject of the sentence, and I is the subjective pronoun. And if you've been speaking English your whole life, your ear quickly picks up the difference between right and wrong. I play the marimbas versus Me play the marimbas.

Squiggly loves me is the proper sentence, not Squiggly loves I. I'm the target of Squiggly's love, so I'm in the object position in that sentence, and the objective pronoun is me. Again, in most cases your ear should pick up the difference. He gave the marimbas to me versus He gave the marimbas to I.

The reason it gets a little tricky when you combine I and me with you is that you is both a subjective and an objective pronoun. It's one of those confusing things that just isn't fair. Whether it is in the subject or the object position, you still use the word you. You love Squiggly and Squiggly loves you. They are both correct.

Here's why the song title “You and I” is correct: The title comes from the line You and I were meant to fly. In that line, you and I are both in the subject case. We're taking action—flying.

That seems pretty straightforward. So now we can move on to “Between You and I” and figure out why it's wrong.

Between is a preposition, just as on, above, over, and of are prepositions. Because prepositions usually either describe a relationship, or show possession, they don’t act alone; they often answer questions like Where? and When? For example, if I said, “Keep that secret between you and me,” between describes where the secret is to be kept. If I said, “I'll tell you the secret on July 5,” on describes when the secret will be revealed.

So, instead of acting alone, prepositions are part of prepositional phrases. In those example sentences, between you and me and on July 5 are prepositional phrases. And it's just a rule that pronouns following prepositions in those phrases are always in the objective case (1). When you're using the objective case, the correct pronoun is me, so the correct prepositional phrase is between you and me.

Most grammarians are sympathetic to people who say between you and I because it's considered a hypercorrection. The theory is that people have been so traumatized by being corrected when they say things such as Ashley and me went to the mall instead of Ashley and I went to the mall that they incorrectly correct between you and me to between you and I (2, 3, 4).

Grammar girl.