It was explained to me that a person who did commit suicide had been ‘’abandoned by God’’.( I’m old school Catholic; pre-Vatican 2, Catholic school of the 50’s/60’s). That to kill ones self was to throw away the gift of life that God had given.
They have Christ in them, the hope of glory. They are already His and HE will never abandon them.
His promise.....Hebrews 13:5-6 Keep your life free from love of money, and be content with what you have, for he has said, “I will never leave you nor forsake you.” So we can confidently say, “The Lord is my helper; I will not fear; what can man do to me?”