9 and, once made perfect, he became the source of eternal salvation for all who obey him

Read Hebrews 5:9 Using Other Translations

And being made perfect, he became the author of eternal salvation unto all them that obey him;
And being made perfect, he became the source of eternal salvation to all who obey him,
In this way, God qualified him as a perfect High Priest, and he became the source of eternal salvation for all those who obey him.