Circumcise
Strongs Glossary:
a primitive root; to cut short, i.e. curtail (specifically the prepuce, i.e. to circumcise); by implication, to blunt; figuratively, to destroy; circumcise(-ing), selves), cut down (in pieces), destroy, [idiom] must needs.
foreskin
Part of Speech:
Noun Feminine
Strongs Glossary:
feminine of עָרֵל; the prepuce; foreskin, [phrase] uncircumcised.
heart
Part of Speech:
Noun Masculine
Strongs Glossary:
from לָבַב; used also like לֵב; the heart (as the most interior organ); [phrase] bethink themselves, breast, comfortably, courage, ((faint), (tender-) heart(-ed), midst, mind, [idiom] unawares, understanding.
stiffnecked
Strongs Glossary:
a primitive root; properly, to be dense, i.e. tough or severe (in various applications); be cruel, be fiercer, make grievous, be ((ask a), be in, have, seem, would) hard(-en, (labour), -ly, thing), be sore, (be, make) stiff(-en, (-necked)).
stiffnecked
Part of Speech:
Noun Masculine
Strongs Glossary:
from עָרַף; the nape or back of the neck (as declining); hence, the back generally (whether literal or figurative); back ((stiff-) neck((-ed).