For that reason, I can't yet post pics of my father's tombstone and its wording, but I can share this pasuk from Tehillim, Chapter 15, Verse 2, that I found and suggested to my brother. It received a thumb's up and appeared on the stone...very appropriate for my father because of what it says and also because he read from Tehillim daily.
הוֹלֵךְ תָּמִים, וּפֹעֵל צֶדֶק; וְדֹבֵר אֱמֶת, בִּלְבָבוֹ
He that walketh uprightly, and worketh righteousness, and speaketh truth in his heart
