He adopted the son of Shantanu, Bhishma, learned in the Shastras of religion and law. He too protected him very virtuously.
स धर्मशास्त्रकुशलं भीष्मं शान्तनवं नृपः। पूजयामास धर्मेण स चैनं प्रत्यपालयत्॥