Before I learned the habit of carrying paper, I once had to engrave a melody with my car keys on the back of a checkbook (I'd already lost it once, and it was not going to escape this time!). Songs have come when I have been leading a free-worship time, or when dull and depressed, or when studying the Bible for some other purpose; but almost never when sitting down neatly in front of a piano with intent to write. Those times, however, are valuable -- they are the preparation of the fertile ground for creating music -- just as a farmer does not see his crop while planting, and indeed he does not know the day when the first sprouts, or the first fruit, appear.
Occasionally, words and music happily appear together; but much more often, the lyrical text comes first. Note that the Bible is text, which has inspired innumerable songs.
A text may have a hundred possible melodies, but it yields for you that melody which is characteristic of your own thoughts on the text. A good melody flows freely out of the text.
Conversely, a chord progression may host a thousand texts, but a chord progression is generic -- it can be about anything. The same even for a melody. Notice in your hymnbook, a well-known melody may be given a new text. "Faith of Our Fathers" becomes "Faith of Our Mothers", jam-packed with "consecration" and "providential" and various other lengthy words, trying to describe (rightly) the mother's task as important as the martyr's, but drowns the sentiment in syllables.
A chord progression or a melody as the source for a new song may make demands on the text you do not wish to comply with; whereas, beginning with the text, a melody may roam a freer range.
yes yoyu are right see i cant read notes so think you for the tip
keep up the work get back to me
Songs usually come faster than even silled note-writers can keep up with them. There are lots of little recording devices -- some phones even have them -- that will handle something the length of a song, with good quality. Recording will capture all the nuance of expression, as well, and serve as a memory aid for when your work is codified for use as with a group (or you can simply play it for them).
Recording hint: When recording, consider following the example of Duke Ellington. He had the tape roll continuously during the entire recording session, without stopping or cutting anything. That way, the musicians were free to create without trying to please a machine (re-recording is a great way to ruin a song, and ruin your day).