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And still they are not aware what powers lie between their hands!

And still they were not aware what powers lay between their hands!

And still they are not aware what powers lie between their hands!B1 [ I + adv/prep, L ]

And still they were not aware what powerspresent participle lying
past tense lay
past participle lain lay between their hands!

If something lies in a particular place, position, or direction, it is in that place, position, or direction

Lie (Cambridge)
Lie (Collins)
English verb: to lie

Present tense: Singular: I lie, you lie, he/she/it lies. Plural: we lie, you lie, they lie.

Past tense: Singular: I lay, you lay, he/she/it lay. Plural: we lay, you lay, they lay.

And still they are not aware what powers lie between their hands!

And still they were not aware what powers lay between their hands!

And still they are not aware what powers lie between their hands!

And still they were not aware what powers lay between their hands!

B1 [ I + adv/prep, L ]

present participle lying
past tense lay
past participle lain

If something lies in a particular place, position, or direction, it is in that place, position, or direction

Lie (Cambridge)
Lie (Collins)
English verb: to lie

Present tense: Singular: I lie, you lie, he/she/it lies. Plural: we lie, you lie, they lie.

Past tense: Singular: I lay, you lay, he/she/it lay. Plural: we lay, you lay, they lay.

2 deleted 238 characters in body
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And still they areare not aware what powers lie between their hands!

Powers are plural. The third person plural ('they') of the verb 'to lie' is lie.

Past tense would be lay

 

And still they werewere not aware what powers lay between their hands!

Present:
Singular: I lie, you lie, he/she/it lies
Plural: We lie, you lie, they lie

Past tense is all 'lay'.

And still they are not aware what powers lie between their hands!

Powers are plural. The third person plural ('they') of the verb 'to lie' is lie.

Past tense would be lay

And still they were not aware what powers lay between their hands!

Present:
Singular: I lie, you lie, he/she/it lies
Plural: We lie, you lie, they lie

Past tense is all 'lay'.

And still they are not aware what powers lie between their hands!

 

And still they were not aware what powers lay between their hands!

1
source | link

And still they are not aware what powers lie between their hands!

Powers are plural. The third person plural ('they') of the verb 'to lie' is lie.

Past tense would be lay

And still they were not aware what powers lay between their hands!

Present:
Singular: I lie, you lie, he/she/it lies
Plural: We lie, you lie, they lie

Past tense is all 'lay'.