在職中に賜りましたご厚情に心より感謝申し上げます。
I sincerely thank you for the kindness you showed me during my time at the company.
今後とも変わらぬご厚情を賜りますようお願い申し上げます。
We humbly ask for your continued goodwill in the future.
故人が生前に賜りましたご厚情に、遺族一同深く御礼申し上げます。
On behalf of the family, we express our deep gratitude for the kindness you showed the deceased during his lifetime.