Perhaps it was better for him to be called early since he would have just continued to suffer even if he had kept on living.
こんにちは！
ご質問ありがとうございます。
ご質問について、いくつか言い方が考えられますが、例えば、
Perhaps it was better for him to be called early since he would have just continued to suffer even if he had kept on living.
とすると、『[生き続けて](https://eikaiwa.dmm.com/uknow/questions/84594/)も苦しいだけだっだだろうから早く召されてよかったのではないか』となります。
『だけ』は、just 、even if で、『たとえ～だとしても』を表現できます。
参考になれば幸いです。
日本 
